JPH0761555A - Conveyor device - Google Patents

Abstract

PURPOSE:To provide a conveyor device which is designed to drive an outbound and an inbound conveyor constantly at the same speed, simplify constitution of a rotary drive part, and save maintenance. CONSTITUTION:A rotation force transmitting mechanism to transmit the rotation force of a motor 31 to first and second conveyors 23 and 27 juxtaposed with each other comprises a first gear 33 to receive the rotation power of the motor 31 for rotation; and a second gear 34 having the same pitch and the same number of teeth as those of the first gear 33 and geared with the first gear 33. The first gear 33 is mounted on the rotary shaft 35 of the sprocket 24a of the first conveyor 23 and the second gear 34 is mounted on the rotary shaft 36 of the sprocket 28a of the second conveyor 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor device used in a production line of electric equipment, an inspection line, etc., and more particularly, to a conveyor device suitable for forward and backward routes when products or parts are conveyed along a work line. It is about.

[0002]

2. Description of the Related Art There are various types of conveyor devices,
In a conveyor device applied to a forward route and a backward route when a product or a part is transported along a work line, the forward transport speed and the backward transport speed are required to be completely the same.

A conventional conveyor device of this type is shown in FIGS. 3 and 4. The drive motor 2 in the forward conveyor 1 has a pulley 4 mounted on its rotary shaft 3, and a pulley 7 mounted on the rotary shaft 6 of the pair of sprockets 5a, 5a is connected to the pulley 4 via a belt 8. Are linked to. The pair of sprockets 5a, 5a and the pair of chains 9, 9 that mesh with the pair of sprockets 5b, 5b provided apart from the sprockets 5a and 5b and move on the circular orbit, are
Orbit in the direction of arrow 11.

On the other hand, the drive motor 13 of the return conveyor 12 has a pulley 15 mounted on its rotary shaft 14, and the rotary shaft 1 of the pair of sprockets 16a, 16a.
A pulley 18 mounted on the pulley 7 is connected to the pulley 15 via a belt 19. A pair of sprockets 16a, 1
6a and a pair of chains 20, 20 which mesh with a pair of sprockets 16b, 16b provided at a position distant from this and move in a circular orbit, cause a conveyor belt 21 to orbit in the direction of arrow 22.

[0005]

In the conventional conveyor device thus constructed, the forward conveyor 1 and the backward conveyor 12 are driven by the respective motors 2 and 13, so that at least two motors 2, Need thirteen. Moreover, even if the two motors 2 and 13 are of the same model, the forward and backward conveyors 1 and 12 are conveyed at the same speed due to slips in the rotary power transmission mechanism and differences in the load. It was difficult to do so, and it took a considerable amount of time and effort for speed adjustment and maintenance for synchronization.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a maintenance-saving conveyor device which can always drive the forward and backward conveyors at the same speed and can simplify the rotary drive section.

[0007]

In order to achieve the above-mentioned object, the present invention provides a first conveyor having a conveyor belt transfer chain that meshes with a plurality of sprockets and moves in a circular path, and a first conveyor. A second conveyor having a conveyor belt transfer chain that is arranged in parallel with each other and meshes with a plurality of sprockets to move on a circular orbit; a motor for driving the conveyor; and a motor for each sprocket of the first and second conveyors. It consists of a rotary power transmission mechanism that transmits rotary power,
The rotational power transmission mechanism includes a first gear that rotates by receiving the rotational power of a motor, and a second gear that has the same number of teeth with the same pitch as the first gear and that meshes with the first gear and rotates in the opposite direction. , The first gear is mounted on the rotary shaft of the sprocket of the first conveyor, and the second gear is mounted on the rotary shaft of the sprocket of the second conveyor, respectively.

[0008]

According to the present invention, the first gear, which rotates by receiving the rotational power of the motor, rotates on the rotation shaft of the sprocket of the first conveyor, and has the same number of teeth with the same pitch as the first gear. The second gear, which meshes with one gear and rotates in the opposite direction, is attached to the rotary shaft of the sprocket of the second conveyor, so that one of the first and second conveyors is used for the forward transfer and the other is used for the return transfer In each case, the forward and backward conveyers can be driven by a single motor. Moreover, since the first gear and the second gear are not only meshed with each other but also mounted on the rotary shafts of the sprockets of both conveyors respectively, slipping does not occur in the rotary power transmission mechanism, and the forward and backward conveyors Even if there is a difference in the load on the two conveyors, both conveyors can be driven at the same speed in opposite directions.

[0009]

Embodiments of the present invention will now be described with reference to the drawings.

As shown in FIGS. 1 and 2, the first conveyor 23 includes a pair of sprockets 24a, 24a and two pairs of sprockets 24 provided apart from the sprockets.
The conveyor belt 26 is transferred by a pair of chains 25, 25 that mesh with b, 24b, 24c, 24c and move on a circular orbit. In addition, the second conveyor 27 provided in parallel with the first conveyor 23 includes a pair of sprockets 28a, 28a.
The conveyor belt 30 is transferred by a pair of chains 29, 29 which mesh with a and two pairs of sprockets 28b, 28b, 28c, 28c provided at positions distant therefrom and move on a circular orbit.

A motor 31 for driving the conveyor has a deceleration gear 32 mounted on its rotary shaft. The first gear 33 that meshes with the deceleration gear 32 and rotates, and the second gear 34 that meshes with the first gear 33 and rotates in the opposite direction have the same number of teeth with the same pitch. Then, the first gear 33 serves as the pair of sprockets 2 of the first conveyor 23.
The second gear 34 is mounted on the rotary shaft 35 of 4a, 24a.
Is a pair of sprockets 28 a, 2 of the second conveyor 27.
It is attached to the rotary shaft 36 of 8a.

Then, as the drive motor 31 rotates, the conveyor belt 26 of the first conveyor 23 is moved to the arrow 37.
In the direction indicated by, and the conveyor belt 3 of the second conveyor 27.
0 moves circularly in the direction indicated by arrow 38, the moving speeds of both transport zones 26 and 30 are always completely the same, and synchronization adjustment is unnecessary.

In the above embodiment, the first gear 33 is meshed with the deceleration gear 32 mounted on the rotary shaft of the motor 31, but when the load is relatively small, the gears shown in FIGS.
As in the configuration shown in FIG. 2, pulleys can be attached to the rotary shaft of the motor 31 and the rotary shafts 35 of the pair of sprockets 24a and 24a, and both pulleys can be connected by a belt. In this case, the deceleration gear 32 is not required. Further, even if a slip occurs between the two pulleys and the belt, the conveying speeds of both conveyors are always kept the same.

When the motor 31 having a low rotation speed is used, the first gear 33 can be directly attached to the rotation shaft of the motor 31. In this case, the load is directly applied to the rotating shaft of the motor 31, so that its use is limited.

Further, in the above-described embodiment, the first and second conveyors 23, 2 are driven by the single motor 31.
7 was driven, but it goes without saying that a third or more conveyors can be arranged in parallel with the first and second conveyors 23 and 27, and multiple rows of conveyors can be driven by a single motor. is there.

[0016]

As described above, according to the present invention, not only can a plurality of rows of conveyors be driven in opposite directions by a single motor, but even if there is a difference in the load applied to each conveyor, both conveyors can be driven. Can always be driven at the same speed, so that the configuration and maintenance can be simplified.

[Brief description of drawings]

FIG. 1 is a plan view of a conveyor device according to an embodiment of the present invention.

FIG. 2 is a partially cutaway side view of a conveyor device according to an embodiment of the present invention.

FIG. 3 is a plan view of a conventional conveyor device.

FIG. 4 is a partially cutaway side view of a conventional conveyor device.

[Explanation of symbols]

 23 1st conveyor 24a sprocket 25 chain 27 2nd conveyor 28a sprocket 29 chain 31 motor 33 1st gear 34 2nd gear

Claims (1)

[Claims] 1. A first conveyor having a conveyor belt transfer chain that meshes with a plurality of sprockets to move on a circular orbit; and a first conveyor that is installed in parallel with the first conveyor and meshes with a plurality of sprockets to move on a circular orbit. A second conveyor having a conveyor belt transfer chain, a motor for driving the conveyor, and a rotary power transmission mechanism for transmitting the rotary power of the motor to the sprockets of the first and second conveyors. The mechanism includes a first gear that rotates by receiving the rotational power of the motor, and a second gear that has the same number of teeth with the same pitch as the first gear and that meshes with the first gear and rotates in the opposite direction. The gear device is mounted on the rotary shaft of the sprocket of the first conveyor, and the second gear is mounted on the rotary shaft of the sprocket of the second conveyor, respectively.